Reel mount spindle



30,1938. A. s. HOWELL 2,128 776 REEL MOUNT SPINDLE' Filed June 28, 1955 3 720322702 d/berf 8. Fave/Z any.

Patented Aug. 30, 1938 UNlTED STATES PATENT OFFIQE Bell & Howell Company,

poration of Illinois Application June 28,

2 Claims.

My invention has particular relation to reel mount spindles of the type usually employed on motion picture machines and more particularly of the type described and claimed in U. S. Letters Patent No. 1,991,853, granted February 19, 1935 on my application for improvement in Reel and spindle mount therefor and in my co-pending application for U. S. Letters Patent, Serial No. 743,- 247, filed September 8, 1934, now Patent No. 2,055,626 of September 29, 1936, for improvement in Reel and spindle mount therefor, although not limited to this use alone.

The main object of the invention relates to the provision of a novel and eifective reel mount spindle, the external reel mount surface of which is shrouded to present a uniform surface and to at least partially enclose and protect any non-uniform structural characteristics of the spindle, such as the reel driving means of the spindle, particularly with a view toward increasing the desirability of the spindle of the aforesaid application and with a View toward preventing the proper mounting and/or driving of unauthorized reels on the spindle.

With this object in View my invention consists in certain features of novelty in the construction, combination, and arrangement of parts by which the said object and certain other objects hereinafter appearing, are effected, all as fully described with reference to the accompanying drawing and more particularly pointed out in the appended claims.

In the said drawing- Figure 1 is an end elevation of a reel mount spindle embodying my invention;

Figure 2 is a partial sectional View of the spindle of Figure 1 and a reel mounted thereon, taken on the line 2--2 of Figure 1;

Figure 3 is a partial side elevation of the spindle of Figure 1 with parts broken away and shown in section on an axial plane thereof;

Figure 4 is an end elevation of a reel mount spindle embodying another form of my invention; and

Figure 5 is a partial sectional view of the spindle of Figure 4 and a reel mounted thereon, taken on the line 5-5 of Figure 4.

Referring to Figures 1, 2 and 3, a revolubly mounted spindle shaft I is provided with a reduced projecting end 2, and a bored spindle hub 3 has the inner portion of its bore tightly engaged on the reduced projecting end 2 of the spindle shaft I to form the spindle. The outer end portion of the bore of the hub 3 is enlarged, as designated at 4, for the mounting of a suitable reel Chicago, 111., a cor- 1935, Serial No. 28,901

corresponding with that described and claimed in the aforementioned Letters Patent and application for Letters Patent.

The spindle hub 3 is provided with a longitudinally extending radial slot 5 extending inwardly from the exterior thereof and communicating with the bore of the spindle hub, and the spindle hub is provided at its inner end with a reduced portion 6 which adjoins a flange I formed on the spindle hub and disposed between the main portion of the spindle hub and the reduced portion 6, the flange 1 being disposed inwardly of a bored frame member 8 of the mechanism carrying the spindle and encircling the inner end of the main portion of the spindle hub 3.

A spring driving member 9 is provided at one end with a coiled portion I I which encircles the reduced inner end 5' of the spindle hub, and a washer I2 is disposed between the shoulder on the spindle shaft I, incident to the reduced end 2 thereof, and the inner end of the spindle hub 3 and serves to confine the coiled portion I I longitudinally of the spindle.

The remainder of the spring member 9 extends from the coiled portion II longitudinally of the spindle and in the slot 5 toward the projecting end thereof and terminates at the reel mount portion I of the bore of the spindle hub 3 with a coiled terminal portion I3 normally projecting into the bore portion 4, the coiled portion I I of the spring member 9 serving as a desirable anchor for the spring member and the engagement of the spring member in the slot 5 serving to angularly fix the spring member with the spindle.

A cylindrical sleeve I4 is tightly engaged over the periphery of the reel mount portion of the spindle hub 3 outwardly of the flange I, and provides a uniform external reel mount surface of the spindle, this sleeve serving to radially enclose the radial slot 5 and to radially enclose and protect the extending portion of the spring member 9 engaged in the slot 5.

The reel shown, see Figure 2, conforms with those described and claimed in the aforesaid Letters Patent and application for Letters Patent, and consists of spaced side plates I5 and I6 secured in a usual manner to opposite ends of a central tubular or hollow member Ill. The side plate It is provided with a round central spindle aperture I8, and a stud I9 is secured centrally on the side plate It in coaxial relation with the aperture I8 and projects from the plate Hi toward the plate I5, a light trapping cup shaped member 28, within the member I1 and between the side plates l5 and I6, being secured against the side plate [6 by means of the stud l9, as described and claimed in the aforesaid application, Ser. No. 743,247.

In the mounting of the reel on the spindle, the aperture l8 of the plate l5 engages over the external surface of the sleeve l4 and the stud l9 engages in the bore portion 4 of the spindle hub 3 for the removable mounting of the reel over the end of the spindle.

The projecting portion of the stud I9 is provided with a number of longitudinally extending angularly spaced driving grooves 2| on its periphery, and the outer end of the spring member 9 is adapted to engage in one of the grooves 2| to form a driving engagement between the reel and the spindle, the spring member being yieldable radially outward of the axis of the spindle to permit mounting of the reel on the spindle in any relative angular position thereof, the spring member 9 engaging in one of the grooves 2| to form the driving engagement upon relative angular movement of the reel and spindle after the mounting of the reel.

Referring to Figures 4 and'5, the structure shown in these figures is substantially identical with that of Figures 1, 2 and 3, with the exception that, instead of the sleeve M of Figures 1, 2 and 3, a cylindrical sleeve 22 surrounds the periphery 0f the reel mount portion of the spindle hub 3 outwardly of the flange 1 and is stationarily mounted for reltice rotation of the spindle with respect thereto by reason of a peripheral flange 23 thereof being riveted, as designated at 24, to the frame member 8.

Elements of Figures 4 and 5 which are identical with the elements of Figures 1, 2 and 3 have been given the same reference characters on the drawing, it being understood that the description thereof given with reference to Figur-es 1, 2 and 3 applies to Figures 4 and 5.

It will be observed that, inasmuch as the sleeve 22 of Figures 4 and 5 is stationary with reference to the spindle, no drive of the reel can be effected therefrom.

Having thus described my invention, I do not wish to be limited to the precise details described as changes may be readily made without departing from the spirit of my invention, but

having thus described my invention, I claim as new and desire to secure by Letters Patent the following:

1. In a device of the character described, the combination with a reel including two axially spaced side plates one of which is provided with an axial mounting aperture and the other of which is provided with an axial mounting projection extending toward the first mentioned side plate, of a revoluble spindle provided with a projecting reel mount end portion and with an axial bore extending inwardly from the corresponding end thereof and engageable with said axial projection for the mounting of the reel and further provided with a longitudinally extending radial slot extending inwardly from the exterior thereof and communicating with said bore, a spring driving member secured with said spindle inwardly of said end and extending with a free portion thereof in and longitudinally of said slot toward said end, the outer end of said free portion being radially engageable with said axial projection and yieldable outwardly of the spindle axis, and a cylindrical member carried with the spindle and surrounding said end portion thereof to shroud the same and engageable with said mounting aperture of said first mentioned reel side plate for the mounting of the reel.

2. In a device of the character described, the combination of a spindle provided with a projecting reel mount end portion and provided with an axial bore extending inwardly from the corresponding end thereof and provided with a longitudinally extending radial slot extending inwardly from the exterior thereof and communicating with said bore, a spring drive member on said spindle and comprising a coiled portion encircling said spindle inwardly of said end and a free portion extending from said coiled portion in and longitudinally of said slot toward said end, the outer end of said free portion being radially engageable with an axial projection on a reel engaged in said axial bore and yieldable radially outward of the spindle axis, and a cylindrical member surrounding said end portion to shroud the same.

ALBERT S. HOWELL. 

